void delay_us(unsigned int);
void delay_ms(unsigned int);

#define DELAY_6Us	6
#define DELAY_9Us	9
#define DELAY_10Us	10
#define DELAY_55Us	55
#define DELAY_60Us	60
#define DELAY_64Us	64
#define DELAY_70Us	70
#define DELAY_205Us	205			// DELAY_410Us = DELAY_205Us + DELAY_205Us
#define DELAY_240Us	260			// DELAY_480Us = DELAY_240Us + DELAY_240Us // since the variable is declared as unsigned char